Filing apparatus.



Patented Nov. 29,1910.

W5 muses THE NORRIS PETERS ca, WASHINGTON, n-c.

WILLIE 'I. GRADY, 0]? ORANGE, VIRGINIA.

FILING APPARATUS.

oraoos.

Specification of Letters Patent.

Patented Nov. 29, 1910.

Application filed June 5, 1909, Serial No. 500,426. Renewed October 22,1910. Serial No. 588,576.

To all whom it may concern:

Be it known that I, WILLIE T. GRADY, a citizen of the United States,residing at Orange, in the county of Orange and State of Virginia, haveinvented certain new and useful Improvements in Filing Apparatus, ofwhich the following is a specification.

This invention relates to certain improvements in filing apparatus, andpertains more particularly to a hand operated file carrying tool,comprising a frame work having sighting or eye gaging means, whereby thestroke of a file may be maintained at any desired angle with relation tothe work being machined.

The object of the invention is to provide a tool of the stated characterwhich will be of simple construction, of reasonable cost to manufacture,substantial in construction and effective in operation.

With these and other objects in view, the invention consists in certainnovel features and combination of parts as will be readily understood byreference to the following specification and accompanying drawings, inwhich,

Figure 1, is a perspective view of the tool. Fig. 2, is a plan view,showing the tool when used at an angle to the work. Fig. 3, is afragmentary detail longitudinal sectional view. Fig. 4, is a detailvertical sectional view on the line 44 of Fig. 1. Fig. 5, is an end viewof one of the file-holding chucks.

In the embodiment illustrated, 1, represents the frame work whichcomprises a yoke member 1, a handle 2, and an adjustable arm 3 carriedby the yoke member 1. The yoke 1 which is preferably integral with thehandle 2, is carried thereon and is formed of a standard 4 and a rightangularly extended arm 5, having the longitudinal slot 6 adjacent itsfree end.

Slidably mounted upon the arm 5, is the adjustable arm 3, which has ahead 7 provided with a square opening of the size and shape of the arm3. A slit 8 in the top of the head 7 forms a pair of clamping arms 9, 9,which are clamped upon the frame by means of a thumb screw 10 whichextends through slot 6. From the head 7 extends a shank 11 whichterminates in an enlarged part 12, having an opening 13 for thereception of a chuck 14 the same being clamped within the opening 13 bymeans of a thumb screw 15. The chuck 14 has formed in its inner end atriangular recess 16 which is adapted to receive the end of a triangularfile, the latter being clamped within the recess by means of the wingscrew 17. The handle portion 2, comprises a stock 18, provided with arecess 19, and a grip member 20. A chuck 21 conforming to the recess 19and having a central annular reduced portion 22 is secured within therecess 19 by means of a wing screw 23 which passes through stock 18 andengages in the reduced portion 22 of the pin 21. A triangular socket 21in the outer end of the in 21 offers a means for holding one end 0 afile.

A longitudinal recess 24 is formed in the standard 4 providing a socketfor the reception of a sight gage 24 which is clamped in position by athumb screw 25.

Mounted upon the upper face of the stock 18 at its inner end beyondstandard 4, and directly under the arm 5 is a transverse sight gage 26which is clamped at any de sired angle by means of the screw 27.

It will be readily seen that with the above adjustable arrangement ofsight gage that after clamping the same in position a very effectivesighting means is provided to enable the stroke of the file to bemaintained at any desired cutting angle. Especially is this desirablewhen sharpening the teeth of a saw, in which case, the angle of cuttingmust be maintained uniform throughout the length of the saw. Forinstance, a in Fig. 2 is a saw block, and the yoke must be held at theangle shown to properly file the teeth. The gage 26, disposed at anangle which will place it parallel to the saw block a when said yoke isheld in proper position provides a member which may be easily watchedand maintained in parallel disposition to said saw block, and this willinsure the proper filing of the saw teeth. The gage 24 insures ahorizontal or inclined filed surface, as desired, by providing a memberof considerable extent whose angular position is readily noticed.

Chuck 14, is provided at its outer end with a knob 14 which provides aconvenient hand grip'in operating the file carrier. The pin or chuck 21,is further provided with an opening 21", which is hexagonal in crosssection so as to readily receive files which are of similar shape attheir inner ends.

What is claimed is In a tool as described, a handle and a yoke membersecured thereto, said handle being formed with a longitudinal opening atone end thereof, a chuck rotatable in said opening formed with a centralannular -groove and with an opening in its outer end to receive one endof the file, a set screw .carried by the handle to engage in saidgroove, an arm on the yoke having an opening therein, a chuck rotatablein said opening and having an opening in its inner end to receive theopposite end of the file, and a set screw projected through said arm tose- 10 cure the'second chuck against movement.

In testimony whereof I afiix my signature in presence of two Witnesses.

WILLIE T. GRADY.

Witnesses:

J. J. Cox, I. A. GARRETT.

